Chapter 129 The core of the problem

Style: Science Author: September SauceWords: 3234Update Time: 24/01/12 10:39:10
Chen Nian followed Xu Yuan into the laboratory. Personnel with insufficient confidentiality levels had been taken away, and several core researchers who had been waiting for a long time immediately gathered around.

"Gong Chen, thank you for your hard work!"

"Gong Chen, I'm sorry to bother you."

"Thank you for your hard work, Chen Gong. I even asked you to work overtime at night, but we are really a little confused."

"Yeah, I originally planned to find you again tomorrow, but..."

The group of people were chatting away, but no one came to question the accuracy of Chen Nian's model.

Because they knew very well that being able to calculate this model proved that Chen Nian's level was definitely not lower than anyone present.

If there is indeed a problem, it is sporadic.

It may be that the parameters of the model itself are not considered enough, or there may be small deviations in the variable design, but it is definitely not possible that there is a problem with Chen Nian's logic and philosophy.

This is the way of communication between real technicians. It is extremely simple and pure. The strong will be respected unconditionally.

Chen Nian greeted them one by one and did not bother to chat too much with them. Instead, he directly asked for the simulation data and began to analyze and compare them one by one.

Others stood beside him and explained a few words to him from time to time.

"What we do here is to adjust the injection angle. Under the premise of a fixed 45 degrees and the same outlet cross-sectional area, we used three different groove types: straight groove, tapering type, and gradually expanding type to conduct experiments. Here are the results It’s still consistent with the model predictions.”

"The problem is this one. After the anti-cross-flow structure is introduced, the data becomes completely different."

"The impact of the rotation effect on the flow heat transfer in the channel exceeds the expected value, and the final results are very different from the model results."

While listening to other people's explanations, Chen Nian looked at the data carefully.

His expression became more solemn.

This isn't right.

There is no problem with the experimental process, and there is no problem with using the model, but the results really don’t match up!

What's going on?

Is it really a problem with the model itself?

If so, that would be great fun.

After all, the main purpose of this model is to analyze the cooling mechanism and cooling effect of turbine blades under various structural designs.

The data output based on the model will be used as a reference for final R&D and manufacturing.

And once the model is wrong, the direction it leads will definitely be wrong.

So what is the use of this model?

After finally analyzing the technology, wouldn’t it mean that we have to go back to manual physical experiments step by step?

Chen Nian put down the data and couldn't help but reach out and scratch his head.

After a while, he reluctantly turned the document to the first page again and looked at it one by one from the beginning.

This time, he didn't even miss every detail in the experimental records.

And just when he saw it, his eyes suddenly lit up.

The researcher on the side noticed his expression and asked:

"How about it, Mr. Chen, can you find the problem?"

Chen Nian shook his head and replied:

"It can be said that it was found, or it can be said that it was not found."

"At present, there is no problem with either the model itself or your experimental process, but the difference between the two exists. This is a difficult thing to deal with."

"I may need more data to verify and troubleshoot the model to confirm whether there are any flaws in the model itself."

Hearing this, everyone had troubled expressions on their faces.

Want data?

Where is the data?

Originally, the biggest problem faced by China's gas turbine design work was insufficient data. Part of the reason why Dongqi wanted to cooperate with Motor Sich was to obtain the historical data they had accumulated.

Now that the cooperation has not been completed and the things have not been obtained, it is really difficult to solve the problem in this way.

Thinking of this, one of the researchers said:

"Gong Chen, this method is indeed feasible, but the problem is that we really have no data."

"Otherwise, we should redo the experiment a few more times?"

"Perhaps there was something wrong with the operation during our experiment, and some uncontrolled variables affected the final results."

Chen Nian shook his head and replied:

"It's useless."

"Even if the same results are measured in the end, such results are random and cannot guide our subsequent design work at all."

“To fundamentally solve the problem, we have to start with the model.”

"In this way, you guys give me the data first, and I will study it when I go back. There is really nothing much that can be done in such a short time."

"If there is any progress, I will notify you as soon as possible."

In fact, at this time, Chen Nian had already vaguely realized what the problem was.

No, there's nothing wrong with the system and there's nothing wrong with the model.

On the contrary, the model output by the system is extremely accurate.

However, this model is a theoretical model output under absolutely ideal conditions.

It will not consider the influence of various conditions in physical experiments, nor the influence of any human factors.

Or to express it with a classic joke:

This thing is a spherical chicken in a vacuum.

Publish a paper? enough.

Theoretical experiment? That's enough!

However, if it is used as a guide for physical experiments, its accuracy will inevitably have problems.

Therefore, what Chen Nian wants to do is to complete this incomplete model and add the fault tolerance factors it should have after considering various environmental factors.

The job is not simple.

According to the normal process, it requires a large amount of historical data to support it, which is why Chen Nian made that request in the first place.

But after hearing the researcher's words, he suddenly reacted.

Maybe you don't need this kind of thing.

Because, he has a problem!

I still remember that when he was designing a single crystal furnace, he reduced the analysis cost of the single crystal furnace time and again through constant trial and error, and finally reduced the "price" of the system to an extremely low level.

Now, in fact, he can use the same method to find the correct fault tolerance factors!

Thinking of this, he quietly opened the system panel, selected an unfamiliar LM-6000 gas turbine, and then selected the turbine blade module of this gas turbine.

Since he had already completed the analysis of AGT110 before, the system displayed an analysis consumption of only 0.12 points at this time.

But, just have it!

With only one number, the increment of knowledge can be reflected in the number.

Models are readily available, but models applicable to reality do not yet exist.

That is to say, as long as you fill in the fault tolerance factor, you can definitely accommodate changes in the numbers.

This is a kind of opportunism, but...

Isn’t it opportunistic to use a large amount of data to correct the model?

He just moved the process to a virtual system.

Thinking of this, Chen Nian became energetic.

Afterwards, he packed up the data files on the desktop and ran back to his residence without looking back.

The researchers behind him froze on the spot, looking at each other.

"Is this okay?"

One of them asked slightly uneasily.

"I don't know. Anyway, if you ask me to do it, there is a high probability that it won't work."

"He doesn't know."

"Gong Chen is indeed a genius, but I don't think this kind of thing can be solved by geniuses. Or we should ask Mr. Wang to see if we can get some data from somewhere?"

"It makes sense. At least there is data, so Mr. Chen can have some reference."

"Let's go and find him together."

"What about Mr. Chen? How about some advice? I feel like it's all in vain."

"Stop making trouble, who are we to advise? Recognize yourself and don't use your own assumptions to set an upper limit for genius."

"Maybe tomorrow morning, he will take out the new model."

This is bound to be a sleepless night.

Chen Nian sat at his desk, trying again and again to add a fault-tolerance factor to the model.

There is no change in the numbers in the system interface.

But he had no doubt that there was something wrong with his direction.

He just needs more time.

You have to let the bullet fly for a while.

It was getting dark, but Chen Nian's eyes were still clear.

Finally, when the first ray of sunlight shone through the window onto his desk, the numbers in the system changed.

[Analysis cost: 0.04 points]

Success!

Chen Nian slammed the table, and the scraps of paper he had accumulated throughout the night flew all over the room.

The complete model is born!

Chen Nian couldn't wait to send the model to the mailboxes of the core members of the technical team through the intranet, and everyone replied with two words almost instantly:

receive.

Then, ten minutes later, Chen Nian noticed that the number of source points in the system interface began to increase rapidly.

3.04, 3.11, 3.29

It didn't finally stop until it rose to 3.68.

Chen Nian lay down on the sofa with relief.

This time, he relied on his own efforts to cheat the system again.

"Is it wrong to let food become a pet?"

This is a world with magical and extraordinary powers.

The elves born in the dishes, the competition between deliciousness and power, the journey under the starlight, the challenge of being held together by bonds...

A young man comes to this world full of courage and dreams with the memory of a top-notch chef in his previous life.

"The food that hides magical power, show your true power in front of me! I order you in the name of your imperial chef, Qin Lang - the food spirit is born!"

"...Eh? Why didn't you respond?!"

[Stable 6,000 a day, 5,000 will finish an old book, trustworthy]

(End of chapter)